The eighth and final season of Dexter is beefing up on guest stars.Showtime confirms Dexter Season 8 will be the final seasonTVGuide.com has learned exclusively that 24 villain Julian Sands will appear on Dexter. Sands, whose TV credits also include ...

TVGuide.com has learned exclusively that 24villain Julian Sands will appear on Dexter. Sands, whose TV credits also include Smallville, Castleand Person of Interest, will play Miles Foster, a wealthy international businessman. Further details on his role are being kept under wraps.